JP2909451B1 - Column and beam joints in prestressed concrete structures - Google Patents
Column and beam joints in prestressed concrete structuresInfo
- Publication number
- JP2909451B1 JP2909451B1 JP34619997A JP34619997A JP2909451B1 JP 2909451 B1 JP2909451 B1 JP 2909451B1 JP 34619997 A JP34619997 A JP 34619997A JP 34619997 A JP34619997 A JP 34619997A JP 2909451 B1 JP2909451 B1 JP 2909451B1
- Authority
- JP
- Japan
- Prior art keywords
- column
- filler
- prestressed concrete
- steel wire
- strength
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Joining Of Building Structures In Genera (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
【要約】
【課題】 大地震による正負繰り返しの荷重を構造物の
構造変形によって吸収できるプレストレストコンクリー
ト構造物における柱と梁の接合構造を提供することであ
る。
【解決手段】 コンクリートの基礎上に多数の柱１が立
設され、該柱１に突設された梁受け用顎４に梁５の端部
６を支持させて多数の梁５が各柱１間に架設され、該梁
５がＰＣ鋼線８によりプレストレスが付与されて柱１に
緊張定着されるとともに、該柱１の梁受け用顎４と梁５
の端部６との間に前記柱１と梁５よりも強度の大きい充
填材７を設けたことである。Abstract: PROBLEM TO BE SOLVED: To provide a joint structure between a column and a beam in a prestressed concrete structure capable of absorbing a cyclic load caused by a large earthquake by structural deformation of the structure. SOLUTION: A number of columns 1 are erected on a concrete foundation, and end portions 6 of the beams 5 are supported by beam receiving jaws 4 projecting from the columns 1 so that a number of the beams 5 The beam 5 is prestressed by the PC steel wire 8 to be tension-fixed to the column 1, and the beam receiving jaw 4 of the column 1 and the beam 5
Is provided between the end portion 6 and a filler 7 having a strength higher than that of the column 1 and the beam 5.
Description
【０００１】[0001]
【発明の属する技術分野】本発明はプレストレストコン
クリート構造物における柱と梁の接合構造に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure between a column and a beam in a prestressed concrete structure.
【０００２】[0002]
【従来の技術】プレストレストコンクリート構造物は、
基礎上に立設したプレキャストコンクリート柱の梁受け
用顎にプレキャストコンクリート梁の端部を支持させて
プレキャストコンクリート梁を各プレキャストコンクリ
ート柱間に架設し、該プレキャストコンクリート梁がＰ
Ｃ鋼線の緊張力によりプレストレスが付与されて定着さ
れている。このようなプレストレストコンクリート構造
物は、一般的に弾性耐力がＲＣ構造に比べて著しく高
い。2. Description of the Related Art Prestressed concrete structures are:
The end of the precast concrete beam is supported by the beam receiving jaw of the precast concrete column erected on the foundation, and the precast concrete beam is erected between each precast concrete column.
The prestress is applied by the tension of the C steel wire and fixed. Such a prestressed concrete structure generally has a significantly higher elastic strength than the RC structure.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記のような
プレストレストコンクリート構造物は、地震などによる
正負繰り返しの荷重を受けると動的な応答が増大すると
ともに、大地震に対しては構造物の塑性変形によるエネ
ルギー消費能力が少ないと言われている。However, the prestressed concrete structure as described above has an increased dynamic response when subjected to repeated positive and negative loads due to an earthquake or the like, and has a large plasticity against a large earthquake. It is said that the energy consumption by deformation is small.
【０００４】本発明は上記のような問題に鑑みてなされ
たものであり、その目的は、大地震による正負繰り返し
の荷重を構造物の構造変形によって吸収できるプレスト
レストコンクリート構造物における柱と梁の接合構造を
提供することである。The present invention has been made in view of the above problems, and an object of the present invention is to join a column and a beam in a prestressed concrete structure capable of absorbing a cyclic load caused by a large earthquake by structural deformation of the structure. Is to provide a structure.
【０００５】[0005]
【課題を解決するための手段】以上の課題を解決するた
めの本発明のプレストレストコンクリート構造物におけ
る柱と梁の接合構造は、コンクリートの基礎上に多数の
柱が立設され、該柱に突設された梁受け用顎に梁の端部
を支持させて多数の梁が各柱間に架設され、該梁がＰＣ
鋼線によりプレストレスが付与されて柱に緊張定着され
るとともに、該柱の梁受け用顎と梁の端部の間に前記柱
と梁よりも強度の大きい充填材を設けたことである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a joint structure between a column and a beam in a prestressed concrete structure according to the present invention has a large number of columns erected on a concrete foundation. A number of beams are erected between the columns by supporting the ends of the beams on the installed beam receiving jaws.
The steel wire is prestressed and fixed to the column by tension, and a filler having higher strength than the column and the beam is provided between the beam receiving jaw of the column and the end of the beam.
【０００６】[0006]
【作用】上記のように柱の梁受け用顎と梁の端部との間
に前記柱と梁よりも強度の大きい充填材を設けたことに
より、プレストレストコンクリート構造物が大地震によ
る正負繰り返しの荷重を受けると、前記の充填材が破壊
される前に、充填材と梁の縁が切れてヒンジの働きをし
て地震エネルギーを吸収する。As described above, a prestressed concrete structure is provided with a filler having strength greater than that of the column and the beam between the beam receiving jaw of the column and the end of the beam. Under load, the edges of the filler and the beam break and act as hinges to absorb seismic energy before the filler is destroyed.
【０００７】梁におけるＰＣ鋼線の緊張を、ＰＣ鋼線の
耐力以下としたことにより、構造物が地震による水平荷
重を受けた場合に、柱と梁との接合部がヒンジ構造にな
りやすい。[0007] By setting the tension of the PC steel wire in the beam to be equal to or less than the proof strength of the PC steel wire, when the structure receives a horizontal load due to an earthquake, the joint between the column and the beam tends to have a hinge structure.
【０００８】[0008]
【発明の実施の形態】以下、本発明のプレストレストコ
ンクリート構造物における柱と梁の接合構造の実施の形
態を図面に基づいて詳細に説明する。図１はプレストレ
ストコンクリート構造物における柱と梁の接合構造の断
面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a joint structure between a column and a beam in a prestressed concrete structure according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross-sectional view of a joint structure between a column and a beam in a prestressed concrete structure.
【０００９】柱と梁の接合構造は、プレキャストコンク
リート柱（以下ＰＣ柱）１が基礎コンクリートの台座ブ
ロック２上に立設され、ＰＣ鋼棒３またはＰＣ鋼線３な
どの緊張によりプレストレスが付与されている。このＰ
Ｃ柱１には、所定の高さ位置に梁受け用顎４が突出形成
されており、該梁受け用顎４上にプレキャストコンクリ
ート梁（以下ＰＣ梁）５の端部６を支持させて各ＰＣ柱
１間にＰＣ梁５が架設されている。In the joint structure between a column and a beam, a precast concrete column (hereinafter, referred to as a PC column) 1 is erected on a pedestal block 2 of a foundation concrete, and a prestress is applied by tension of a PC steel rod 3 or a PC steel wire 3. Have been. This P
The C pillar 1 is formed with a beam receiving jaw 4 at a predetermined height so as to protrude. The end 6 of a precast concrete beam (hereinafter referred to as a PC beam) 5 is supported on the beam receiving jaw 4. A PC beam 5 is erected between the PC columns 1.
【００１０】このＰＣ梁５の端部６と前記ＰＣ柱１の梁
受け用顎４の間には充填材７が設けられ、これを介して
ＰＣ梁５の端部６がＰＣ柱１の梁受け用顎４に載置され
ている。前記充填材７はＰＣ柱１やＰＣ梁よりも強度の
大きいモルタル、樹脂モルタル、硬質プラスチック、グ
ラウトのいずれかであり、梁受け用顎４の上面から前面
にかけて適宜厚さで設けられている。また前記の充填材
７は高強度モルタルと硬質プラスチックの組み合わせ、
または樹脂モルタルと硬質プラスチックの組み合わせ、
あるいは高強度グラウトと硬質プラスチックの組み合わ
せで使用することもできる。[0010] A filler 7 is provided between the end 6 of the PC beam 5 and the beam receiving jaw 4 of the PC column 1, and the end 6 of the PC beam 5 is connected to the beam of the PC column 1. It is placed on the receiving jaw 4. The filler 7 is any one of mortar, resin mortar, hard plastic, and grout having a strength higher than that of the PC column 1 and the PC beam, and is provided with an appropriate thickness from the upper surface to the front surface of the beam receiving jaw 4. The filler 7 is a combination of high-strength mortar and hard plastic,
Or a combination of resin mortar and hard plastic,
Alternatively, a combination of high-strength grout and hard plastic can be used.
【００１１】ＰＣ柱１とＰＣ梁５とは、これらにわたっ
て貫通したＰＣ鋼線８を緊張して所定のプレストレスを
付与して接合している。尚、この緊張はＰＣ鋼線８にあ
る程度余裕をもたせて緊張することにより大変位に対応
できる構造とする。すなわち、従来の緊張がＰＣ鋼線８
の耐力の８０〜８５％の緊張力で緊張していたのに対し
て、本発明はＰＣ鋼線８の耐力の４０〜７０％の緊張力
で緊張することであり、この緊張力の範囲が最も好まし
い。The PC column 1 and the PC beam 5 are joined by applying a predetermined prestress by tensioning the PC steel wire 8 penetrating therethrough. Note that the tension is given to the PC steel wire 8 with some allowance so that it can cope with a large displacement. That is, the tension of the conventional PC steel wire 8
The present invention is to tension at a tension of 40 to 70% of the proof stress of the PC steel wire 8 while the tension is 80 to 85% of the tensile strength of Most preferred.
【００１２】このような構成にすると、地震時において
充填材７が破壊される前に、ＰＣ梁の端部６と充填材
７、またはＰＣ柱１と充填材７との縁が切れてヒンジ構
造となることにより地震水平力は伝えるが、回転モーメ
ントは伝えない構造となり、水平変形で地震エネルギー
が吸収できる。With such a structure, before the filler 7 is destroyed during an earthquake, the edge of the PC beam 6 and the filler 7 or the edge of the PC column 1 and the filler 7 is cut off to form a hinge structure. As a result, the structure transmits the seismic horizontal force but does not transmit the rotational moment, and can absorb seismic energy by horizontal deformation.
【００１３】図２は大地震による正負繰り返しの荷重を
受けた場合に、充填材７とＰＣ梁５との縁が切れてヒン
ジ構造となった状態を示したものであり、このような
（１）および（２）に示す構造変形で地震エネルギーを
吸収することにより、ＰＣ柱１およびＰＣ梁３はともに
健全な状態を保つことができる。これは充填材７がＰＣ
柱１およびＰＣ梁５よりも強度が大きいため、これが破
壊される前にＰＣ梁５との縁が切れる。また縁を切りや
すくするために図３（１）に示すように、パラフィン、
重油、鉱油、合成樹脂などの剥離剤９を設けておくこと
もできる。この剥離剤９は充填材７とＰＣ梁５との間だ
けではなく、同図の（２）に示すように、充填材７とＰ
Ｃ柱１との間にも設けることができる。この場合は充填
材７がＰＣ梁の端部６に接着されたままでＰＣ柱１との
縁が切れた状態となる。FIG. 2 shows a state in which the edge of the filler 7 and the PC beam 5 is cut off to form a hinge structure when a load is applied repeatedly due to a large earthquake. By absorbing the seismic energy by the structural deformation shown in (2) and (2), both the PC column 1 and the PC beam 3 can maintain a healthy state. This is when the filler 7 is PC
Since the strength is higher than the column 1 and the PC beam 5, the edge with the PC beam 5 is cut off before it is broken. In addition, as shown in FIG.
A release agent 9 such as heavy oil, mineral oil, or synthetic resin may be provided. The release agent 9 is applied not only between the filler 7 and the PC beam 5, but also as shown in FIG.
It can also be provided between the C column 1. In this case, the edge of the PC column 1 is cut off while the filler 7 is adhered to the end 6 of the PC beam.
【００１４】[0014]
【発明の効果】柱の梁受け用顎と梁の端部との間に、柱
と梁よりも強度の大きい充填材を設けたことにより、プ
レストレストコンクリート構造物が大地震による正負繰
り返しの荷重を受けると、前記の充填材が破壊される前
に、充填材と梁との縁が切れてヒンジの働きをするので
地震エネルギーが吸収できる。According to the present invention, a prestressed concrete structure is provided between the beam receiving jaw of the column and the end of the beam, and has a greater strength than the column and the beam. When the filler is received, the edge between the filler and the beam is cut off before the filler is broken, thereby acting as a hinge, so that seismic energy can be absorbed.
【００１５】充填材を樹脂モルタル、硬質プラスチック
としたことや、充填材と梁との間に剥離剤が設けられた
ことをにより、充填材とＰＣ梁の端部との縁が切れやす
くなる。Since the filler is made of resin mortar or hard plastic, and the release agent is provided between the filler and the beam, the edge between the filler and the end of the PC beam is easily cut.
【００１６】ＰＣ梁の端部が梁受け用顎との固定からヒ
ンジ支持に至る過程においても、ＰＣ梁の端部がＰＣ柱
の梁受け用顎に支持され、かつＰＣ鋼線にぶら下がるの
でＰＣ梁が落下する危険性がない。In the process from the fixing of the end of the PC beam to the beam receiving jaw to the hinge support, the end of the PC beam is supported by the beam receiving jaw of the PC column and hangs on the PC steel wire. There is no danger of beams falling.
【００１７】梁におけるＰＣ鋼線の緊張を、ＰＣ鋼線の
耐力以下としたことにより、構造物が地震による水平荷
重を受けた場合に、柱と梁との接合部がヒンジ構造とな
って構造変化による地震エネルギーの吸収ができる。Since the tension of the PC steel wire in the beam is set to be equal to or less than the strength of the PC steel wire, when the structure receives a horizontal load due to an earthquake, the joint between the column and the beam becomes a hinge structure. Can absorb seismic energy due to change.
【図１】柱と梁の接合構造を示す断面図である。FIG. 1 is a sectional view showing a joint structure between a column and a beam.
【図２】（１）および（２）は梁と充填材の縁が切れた
状態を示す断面図である。FIGS. 2 (1) and (2) are cross-sectional views showing a state where edges of a beam and a filler are cut off.
【図３】（１）および（２）は充填材と柱または梁との
間に剥離剤を設けた断面図である。FIGS. 3A and 3B are cross-sectional views in which a release agent is provided between a filler and columns or beams.
【符号の説明】 １ ＰＣ柱 ２ 台座ブロック ３、８ ＰＣ鋼線 ４ 梁受け用顎 ５ ＰＣ梁 ６ 端部 ７ 充填材[Description of Signs] 1 PC column 2 Pedestal block 3, 8 PC steel wire 4 Beam receiving jaw 5 PC beam 6 End 7 Filler
Claims (4)
され、該柱に突設された梁受け用顎に梁の端部を支持さ
せて多数の梁が各柱間に架設され、該梁がＰＣ鋼線によ
りプレストレスが付与されて柱に緊張定着されるととも
に、該柱の梁受け用顎と梁の端部の間に前記柱と梁より
も強度の大きい充填材を設けたことを特徴とするプレス
トレストコンクリート構造物における柱と梁の接合構
造。A plurality of columns are erected on a concrete foundation, and a plurality of beams are erected between the columns by supporting beam ends on beam receiving jaws projected from the columns. The beam is prestressed by the PC steel wire and is tensioned and fixed to the column, and a filler material having greater strength than the column and the beam is provided between the beam receiving jaw of the column and the end of the beam. A joint structure between a column and a beam in a prestressed concrete structure, characterized by:
タル、硬質プラスチック、高強度グラウトの少なくとも
一つが選択されることを特徴とする請求項１に記載のプ
レストレストコンクリート構造物における柱と梁の接合
構造。2. The joint between a column and a beam in a prestressed concrete structure according to claim 1, wherein the filler is selected from at least one of high-strength mortar, resin mortar, hard plastic, and high-strength grout. Construction.
の間には剥離剤がそれぞれ設けられたことを特徴とする
請求項１または２に記載のプレストレストコンクリート
構造物における柱と梁の接合構造。3. The column and beam in a prestressed concrete structure according to claim 1, wherein a release agent is provided between the filler and the column or between the filler and the beam. Joint structure.
鋼線の耐力以下であることを特徴とする請求項１、２、
３のいずれかに記載のプレストレストコンクリート構造
物における柱と梁の接合構造。4. The tension of a PC steel wire in the beam,
The proof stress is not more than the proof strength of the steel wire.
3. A joint structure between a column and a beam in the prestressed concrete structure according to any one of 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34619997A JP2909451B1 (en) | 1997-12-16 | 1997-12-16 | Column and beam joints in prestressed concrete structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34619997A JP2909451B1 (en) | 1997-12-16 | 1997-12-16 | Column and beam joints in prestressed concrete structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2909451B1 true JP2909451B1 (en) | 1999-06-23 |
| JPH11172762A JPH11172762A (en) | 1999-06-29 |
Family
ID=18381789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34619997A Expired - Fee Related JP2909451B1 (en) | 1997-12-16 | 1997-12-16 | Column and beam joints in prestressed concrete structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2909451B1 (en) |
Cited By (1)
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| US20180291611A1 (en) * | 2015-07-17 | 2018-10-11 | Sumitomo Mitsui Construction Co., Ltd. | Frame structure and method of constructing frame structure |
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| KR100356048B1 (en) * | 2000-01-14 | 2002-10-12 | 삼성물산 주식회사 | U-shape PS beam and method for constructing structure using the same |
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| JP4647714B1 (en) * | 2010-05-26 | 2011-03-09 | 黒沢建設株式会社 | Buildings using walled columns with seismic prestressing |
| KR101193074B1 (en) | 2011-01-20 | 2012-10-22 | 동국대학교 산학협력단 | Method of strengthening foundation where above main structure is reinforced with external load bearing precast concrete wall panel |
| KR101065439B1 (en) | 2011-03-29 | 2011-09-16 | 우경기술주식회사 | The aseismic reinforcement structure for reinforced concrete structure and it's method |
| JP6044105B2 (en) * | 2012-04-24 | 2016-12-14 | 株式会社大林組 | Construction method of concrete structure |
| JP5408595B1 (en) * | 2013-06-21 | 2014-02-05 | 黒沢建設株式会社 | PC seismic joint structure and PC seismic joint method for columns and beams using steel pins |
| JP5612231B1 (en) * | 2014-05-16 | 2014-10-22 | 黒沢建設株式会社 | Seismic design method using PC crimp joint method |
-
1997
- 1997-12-16 JP JP34619997A patent/JP2909451B1/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180291611A1 (en) * | 2015-07-17 | 2018-10-11 | Sumitomo Mitsui Construction Co., Ltd. | Frame structure and method of constructing frame structure |
| US10465374B2 (en) * | 2015-07-17 | 2019-11-05 | Sumitomo Mitsui Construction Co., Ltd. | Frame structure and method of constructing frame structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11172762A (en) | 1999-06-29 |
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